Novel filter segment comprising a substrate loaded with a smoke-modifying agent

摘要

A filter segment (16) for use in a filter (14) of a smoking article (10, 20, 20, 40, 50) comprises a substrate (20) loaded with at least one smoke-modifying agent. The substrate (20) is located within the body of the filter segment (16) and is formed from filter plug wrap having an air permeability of between about 6000 Coresta units and about 24000 Coresta units.